# Walter Roberson

I do not do free private consulting. If you want to bring my attention to something, send a link to the MATLAB Answers location. I am currently caught up to T0099119; if you are waiting on a reply from me for an older issue, please send me a reminder.

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**Content Feed**

I can't comput the following commands

Remove all of the if statements. And convert the && to & A1=sum(total>=90 & total<=100); fprintf('The number of A+ stu...

ongeveer 3 uur ago | 0

How to perform an operation after reading the image?

readimageFcn=@(x) imagenorm(int16(dicomread(x))); There is some uncertainty here, as imagenorm() is not a defined Mathworks fun...

ongeveer 3 uur ago | 0

Will there be a Linux ARM binary?

There is no Linux ARM binary. My personal guess is that Mathworks will go for Windows ARM before going for Linux ARM.

ongeveer 3 uur ago | 0

Append tables with a new variable

T1 = table([1:5].') T2 = table([6:8].', [3;1;4]) vn1 = T1.Properties.VariableNames; vn2 = T2.Properties.VariableNames; new_v...

ongeveer 4 uur ago | 0

| accepted

Which version suits AGX Orin？

You cannot install MATLAB on AGX Orin.

ongeveer 7 uur ago | 0

How to calculate and display electricity used in a month using fprintf?

KWH = input('How many KWH this month: '); BILL = 0.066 * KWH; fprintf('Your charge for %f KWH will be $%.2f\n', KWH, BILL)

ongeveer 16 uur ago | 0

How to compute the following questions

You can use nnz(BooleanArray) or sum(BooleanArray) to get the number of selected results.

ongeveer 17 uur ago | 0

"Undefined variable" error even though variable is defined

if frame1 == 1 Background1 = thisFrame1; else This does not define Background1 if frame1 ~= 1

1 dag ago | 0

How do I prevent the command that caused an error being displayed in the command line?

./my_executable xyz: Signal 127 That indicates that ./my_executable could not be found. You are not in the directory you though...

1 dag ago | 0

How to create this table/matrix?

ForecastInfo = table(CIV.SYMBOL(1:10,:), ForecastDates', 'VariableNames', {'Symbol', 'Forcecast Dates'});

1 dag ago | 0

| accepted

writetable or dlmwrite to save an array as a txt file

M = [ 1.0000 -26.2000 -31.7000 2.0000 -27.1000 -33.9000 3.0000 -25.5000 -30.2000 4.0000 -24.4000 -30...

2 dagen ago | 0

I keep getting the error message that the variables must be of data type double and it is currently of type sym.

%I'm unsure how else to run this code to solve the 10 eqn system where %the answer comes out in the correct form, please help ...

2 dagen ago | 1

| accepted

Hi, this is my code, I want to fit 36 graphs in one graph (36 rays in layout view)

N = 2048; L = 1e4; dx = 4e-3; [x0,y0] = meshgrid((-N/2:N/2-1)*dx); [xL,yL] = meshgrid((-N/2:N/2-1)*dx); [fx,fy] = meshgrid(...

2 dagen ago | 1

Genetic algorithm gives same result everytime

You have a single variable that is integer constrained between 10 and 100. That is only 91 different values to search, at most -...

2 dagen ago | 0

| accepted

How can I displace x and/or y axes from existing positions?

There is no provided way to do this. You will have to turn axes off, and draw the axes yourself.

3 dagen ago | 0

Fastest possible prime number detection without using break or return

The fastest possible way of doing any computation depends upon the fine details of your CPU, and upon the fine details of how me...

3 dagen ago | 0

Processing Multiple Files at once.

[filelist,pathn] = uigetfile('*.*','Please Select a Par File in .dat or .txt', 'multiselect', 'on'); if isnumeric(filelist); er...

3 dagen ago | 0

| accepted

Uploading .mat files that contain nested structs into a datastore

data = matfile(filename, variables{1}); That is the wrong way to use matfile. The proper way to use matfile is matObj ...

3 dagen ago | 0

How can I skip the rest of an if statement?

if n > 1 while true if a == 1 disp('Haha') break % (Here is where I want to skip the res...

3 dagen ago | 0

| accepted

ginput error in matlab 2020a

Error in contains (line 36) tf = ~cellfun(@isempty, strfind(s, pattern)); ... Except that contains is a built-in function and ...

4 dagen ago | 0

How to determine if angles match

You would get that behavior if prec1 or prec2 are non-scalar and it does not happen that all of the values pass the tests.

4 dagen ago | 0

| accepted

How to run a function in app designer?

psi = app.EditField_psi.Value; phi = app.EditField_phi.Value; theta = app.EditField_theta.Value; m = app.EditField_m.Value; ...

4 dagen ago | 0

No sound when playing movie in Matlab2020b

%dispMoviesMatlab - ComputerVision Toolbox audiopath = 'C:\Users\maxab\OneDrive\Desktop\Masters\Experiment\Movies\Chosen'; m...

4 dagen ago | 0

Where is Shader graphics available in MATLAB

The only access is shading (not very extensive)

4 dagen ago | 0

vectorized operations on symbolic functions

syms x1 x2 x3; % symbolic variables y = x1^3/3 + x2^2/2 - x3; % symbolic function y X = rand(500,3); % each row representing a...

4 dagen ago | 0

Slice command for terrain

No. Your data cannot be sliced. Perhaps you might want to contour() the data, and get back the contour matrix, and use somethin...

4 dagen ago | 0

| accepted

Extract color map from png apply to grayscale image

Use rgb2ind() on the colored image, and take the second output as being the color map. [~, cmap] = rgb2ind(TheColoredImage); i...

4 dagen ago | 1

| accepted

how to perform a multi variable optimization on matlab

There are several different minimizers possible. Everything except fzero() -- fzero() is restricted to one variable. The trick ...

4 dagen ago | 0

Binary GA returns floating point numbers

% Set seed for reproducability rng(42); % Load data and define arrays data = readmatrix('Data/File_S1.xlsx'); X = data(2:e...

4 dagen ago | 0